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Table 3 Mean Cronbach’s alpha calculated from 50 random samples of size N from each of the BWS and Likert conditions. Higher values of alpha indicate increased reliability for the face-level scores in that condition. BWS best-worst scaling

From: Best-worst scaling improves measurement of first impressions

N BWS Likert
8 0.822 0.778
12 0.893 0.827
20 0.924 0.901
30 0.951 0.931
40 0.962 0.948
50 0.970 0.958
122 0.988 0.983